With automation in marine applications and the protection of our seas, the sealing technology is becoming increasingly important. Various different media need to be sealed in the tightest of spaces on board ships: the spectrum of applications in this sphere ranges from fuel supply, fire fighting facilities, bilge and ballast tank pumps right through to tubular stern seals, thru-bulkhead receptacles and flue gas ducts. Many of the seals used in such applications have to be seawater resistant, so in many cases are made from high-quality materials.